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benma
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Aug 15, 2024
CMakeLists.txt
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| @@ -224,7 +224,7 @@ configure_file(src/bootloader/bootloader_version.h.in src/bootloader/bootloader_ | |||
| string(APPEND CMAKE_C_FLAGS " -std=c11 -pipe") | |||
| if(CMAKE_CROSSCOMPILING) | |||
| set(CMAKE_C_FLAGS "\ | |||
| ${CMAKE_C_FLAGS} -mcpu=cortex-m4 -mthumb -mlong-calls \ | |||
| ${CMAKE_C_FLAGS} -mcpu=cortex-m4 -mthumb -mlong-calls -mno-unaligned-access \ | |||
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Is this safe, or does this introduce risk? If it's safer to not use this flag we could postpone using this trick until we need to save bytes more urgently.
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Yeah, not sure what the impact is. I think unaligned accesses can be problematic on some platforms, so I would assume that no unaligned access would be safer than allowing it.
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I will wait this this PR until I have some other CI related things merged and I've tested the device. |
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Firmware doesn't work. It doesn't pop up the "unlock" screen. |
Thompson1985
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Oct 3, 2024
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Since usb stack refactoring modern GCC works. |
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To reduce the size of the binary a bit we could add -mno-unaligned-access because that made struct initialization generate quite a lot more code.